Reliance Industries Limited

The University of Alabama

Pretium Innovation, LLC

Parasu Veera Uppara

Pavankumar Aduri

Mangesh Raghunath Sakhalkar

Uday Meghashyam Ratnaparkhi

Suresh Shantilal Jain

Viswanath Kotra

Vibhuti Dukhande

Robin Don Rogers

Vivek Prabhakar Raje

Gabriela Gurau

Ronnie Michael Hanes

Peter P Hanik

Rajkumar Kore

Prashant Sudhakar Tangade

Prathmesh Pradeep Salvi

Aduri Pavankumar

The present disclosure relates to an ionic liquid composition and a process for its preparation. The process of the present disclosure is simple, single pot and efficient process for preparing the ionic liquid composition which is effective in a Friedel Craft reaction like, alkylation reaction, trans-alkylation, and acylation. The present disclosure envisages an ionic liquid composition comprising at least one metal hydroxide; at least one metal halide; and at least one solvent. Also envisaged is a process for preparing an ionic liquid composition. The process comprises mixing in a reaction vessel, at least one metal hydroxide and at least one metal halide in the presence of at least one solvent under a nitrogen atmosphere and continuous stirring followed by cooling under continuous stirring to obtain the ionic liquid composition.

Metal hydroxide based ionic liquid composition

Ethylenically unsaturated polymerization catalyst compositions including an active catalytic metal component and an ionic compound component and methods for making and using same.

Polymerization compositions and methods for making and using same

Described herein are methods of acylating an aryl substrate comprising combining a substituted aryl substrate with an acylating agent in the presence of a catalyzing medium, thereby acylating the substituted aryl substrate in the para position, wherein the catalyzing medium is an ionic liquid comprising at least one cation and at least one metal halide anion.

Methods of acylation with an ionic liquid catalyzing medium

The present disclosure provides a composition for preparing terephthalic acid; said composition comprises p-Toluic acid in an amount of 0.05% to 4% with respect to the total mass of the composition; at least one catalyst in an amount of 0.02% to 2.5% with respect to the total mass of the composition; at least one ionic liquid in an amount of 0.04% to 50% with respect to the total mass of the composition; at least one carboxylic acid solvent; and p-xylene. The present disclosure also provides a process for preparing terephthalic acid.

Composition for preparing terephthalic acid

The present disclosure provides an ionic liquid compound of Formula (I) and its application in reactions such as alkylation, arylation, acylation, diels alder and oligomerization,  The present disclosure also provides a process for preparing the ionic liquid compound of Formula (I) which involves preparing an ionic salt complex represented by Formula [(NRRR)M][X]by mixing an amine represented by Formula NRRRand a metal salt represented by formula MX; and mixing the ionic salt complex and a metal salt represented by formula MYto obtain the ionic liquid compound.

Ionic liquid compound

The present disclosure provides a composition for preparing aryl carboxylic acid; said composition comprising: at least one ionic liquid, at least one catalyst, at least one non-oxidizable polar solvent, and at least one oxidizable multi-alkylated arylene compound with no two successive ring positions bearing alkyl group. The present disclosure also provides a process for preparing aryl carboxylic acid.

Ionic liquid composition

The present disclosure provides a process for regenerating the deactivated ionic compound. The process involves mixing a deactivated ionic compound with at least one solvent such as ethyl acetate and neutralizing with at least one base such as triethylamine and tert-butyl amine to obtain a precipitate. The obtained precipitate is filtered to obtain a residue which is then washed with a solvent such as dichloromethane to obtain the ionic compound.

Process for regenerating ionic compound

In the present disclosure, a process for separating aryl carboxylic acids from a mixture comprising a plurality of aryl carboxylic acids is provided, wherein the process comprising the steps of heating a first mixture that comprises at least two aryl carboxylic acids wherein each of said aryl carboxylic acids having a pre-determined liquefaction temperature and a pre-determined precipitation temperature, with at least one ionic compound, at a pre-determined temperature to obtain a liquefied composition; and cooling the liquefied composition under controlled temperature conditions to fractionally crystallize and precipitate an aryl carboxylic acid. The precipitated aryl carboxylic acid is isolated and the obtained mother liquor is subjected to iterated cooling steps until each of the remaining aryl carboxylic acids precipitates one by one. The mother liquor remains in liquefied form.

Process for separating aryl carboxylic acids

A process for preparing alditol Acetals via a dehydrocondensation reaction is disclosed. The reaction is carried out by adding an aldehyde and an aldiol using a metal salt based ionic liquid as an acid catalyst. The ionic liquid used in the process is prepared by dissolving a hydrogen donor and a compound providing counter ion in a solvent.

Process for preparing alditol acetals

A process for the preparation of 1,3:2,4-bis(4-methylbenzylidene)sorbitol (MDBS) and 1,3:2,4-bis(3,4-dimethylbenzylidene)sorbitol (DMDBS) via a dehydrocondensation reaction is disclosed. The reaction is carried out between an aldehyde and an alditol in a mole ratio of 2:1 wherein ionic fluid is used as the acidic catalyst and/or reaction medium. The ionic fluid used in accordance with the present invention is quaternary ammonium salt based ionic liquid.

Process for preparation of acetals

This invention is directed to a process for preparation of acetal derivatives, 1,3:2,4-bis(3,4-dimethylbenzylidene)sorbitol (DMDBS) and 1,3:2,4-bis(4-methylbenzylidene)sorbitol (MDBS) by carrying out a dehydrocondensation reaction between an aldehyde and an alditol using an aqueous ionic fluid as the acid catalyst.

Method of making diacetal compound in aqueous medium

The present invention is directed to a process for the preparation of 1,3:2,4-bis (4-methylbenzylidene) sorbitol (MDBS) and 1,3:2,4-bis (4-dimethylbenzylidene) sorbitol (DMDBS) by dehydrocondensating an aldehyde and an alditol using a hydrophobic ionic liquid as an acid catalyst. The ionic liquid used in the accordance with the process of the present invention is a phosphonium ion based ionic liquid.

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Maharashtra, India

Parasu Veera Uppara